Magnetic pole device

Abstract

The utility model relates to a magnetic pole device which comprises a magnetic pole body, the magnetic pole body comprises magnetic sheets, a key strip and an end plate, the magnetic sheets are stacked and arranged, the key strip penetrates through the stacked magnetic sheets and the end plate, the key strip does not protrude out of the end plate, and the end plate is connected to the key strip to clamp the stacked magnetic sheets. The utility model has the beneficial effects that the mutually stacked magnetic sheets are tightly pressed through the two end plates, the end plates are connected to the key strips penetrating through the magnetic sheets, the influence of the key strips on the performance of the magnetic sheets can be almost ignored, and the key strips are necessary components of most magnetic poles, which is equivalent to that the end plates are additionally arranged on the magnetic poles in the patent, so that the stacked magnetic sheets can be tightly pressed; compared with the prior art, a screw rod for connection can be omitted, so that the magnetic sheet structure is prevented from being damaged, and the performance of the magnetic pole is improved; and the assembly of the screw rod and the pre-tightening process of nuts at the two ends of the screw rod can be omitted, so that the production and processing efficiency of the magnetic pole is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motor magnetic pole assembly, in particular to a magnetic pole device. Background Art

[0002] The permanent magnet motor includes circumferentially arranged magnetic poles, and permanent magnet slots are formed between adjacent magnetic poles to set permanent magnets, which cooperate with the coil magnetic field to generate excitation to make the rotor rotate.

[0003] The magnetic pole includes stacked magnetic sheets. In the prior art, a screw can penetrate the stacked magnetic sheets, and the two outermost magnetic sheets can be pre-tightened with bolts.

[0004] However, in this technical solution, multiple screws need to be set up. The screws passing through the magnetic sheet will destroy the structure of the magnetic sheet and reduce the performance of the magnetic sheet. At the same time, each screw needs to pre-tighten the magnetic sheet on both sides, making the assembly process of the magnetic sheet too complicated and reducing the production efficiency of the magnetic pole. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the above-mentioned shortcomings and deficiencies of the prior art, the utility model provides a magnetic pole device, which solves the technical problem that the screws passing through the magnetic sheets will damage the structure of the magnetic sheets and reduce the performance of the magnetic sheets in the prior art method of using multiple screws to pre-tighten the magnetic sheets; at the same time, each screw needs to pre-tighten the magnetic sheets on both sides, resulting in the overly complicated assembly process of the magnetic sheets and reducing the production efficiency of the magnetic poles.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose, the main technical solutions adopted by the utility model include:

[0009] In the first aspect, the utility model provides a magnetic pole device, including a magnetic pole body, the magnetic pole body including magnetic sheets, key bars and end plates, a plurality of magnetic sheets are stacked and arranged, the end plates are located on both sides of the stacked magnetic sheets, the key bars penetrate the stacked magnetic sheets and the end plates, and the key bars do not protrude beyond the end plates, and the end plates are connected to the key bars to clamp the stacked magnetic sheets.

[0010] In a technical solution of the utility model, a plurality of connection holes are provided on one side of the stacked magnetic sheets, the connection holes penetrate into the key bar, and the axis of the connection holes is perpendicular to the axis of the key bar; the key bar is provided with internal threads at positions corresponding to the connection holes to connect the magnetic pole body and the rotor.

[0011] In one technical solution of the utility model, the magnetic pole device also includes a magnetic pole tooling, which includes a carcass, a pressure plate and a pressure block. A mounting groove is formed in the carcass, and the stacked magnetic sheets can be detachably connected to the mounting groove. The pressure plate and the pressure block are respectively detachably connected to both sides of the carcass, and the pressure block can extend into the mounting groove so that the pressure plate and the pressure block can press the stacked magnetic sheets.

[0012] In a technical solution of the utility model, a first clearance area is provided on the pressing block, and a second clearance area is provided on the pressing plate to make room for operation when the end plate and the key strip are connected; the end plate and the key strip are welded.

[0013] In a technical solution of the utility model, a third clearance area is provided on the carcass, and the position of the third clearance area corresponds to the position of the connecting hole, so as to make room for operation when the connecting hole is provided.

[0014] In one technical solution of the utility model, the installation groove is a trapezoid that matches the shape of the magnetic piece, and the installation groove is open on one side corresponding to the long side of the trapezoid; the depth of the installation groove is less than the height of the magnetic piece so that the magnetic piece can extend out of the installation groove.

[0015] In a technical solution of the utility model, the pole tooling also includes a sliding drive mechanism, the sliding drive mechanism is connected to the carcass, and the pressing block is connected to the driving end of the sliding drive mechanism so that the pressing block can approach or move away from the stacked magnetic sheets.

[0016] In one technical solution of the utility model, the sliding drive mechanism includes a lead screw and a mounting plate, the mounting plate is detachably connected to one side of the carcass, the lead screw is threadedly connected to the mounting plate, and the axis of the lead screw extends along the clamping direction of the stacked magnetic sheets, and the pressure block is rotatably connected to the end of the lead screw close to the magnetic sheet.

[0017] In a technical solution of the utility model, the sliding drive mechanism further includes a handle connected to an end of the lead screw away from the magnetic sheet.

[0018] (III) Beneficial effects

[0019] The beneficial effects of the utility model are as follows: in the magnetic pole device of the utility model, the stacked magnetic sheets are pressed together by two end plates, and the end plates are connected to the key strips running through the magnetic sheets. The influence of the key strips themselves on the performance of the magnetic sheets is almost negligible, and the key strips are also essential components of most magnetic poles. This is equivalent to adding end plates to the magnetic poles according to the patent, so that the stacked magnetic sheets can be pressed together. Compared with the prior art, the connecting screws can be omitted, thereby avoiding damage to the magnetic sheet structure and improving the performance of the magnetic poles; the assembly of the screws and the pre-tightening process of the nuts at both ends of the screws can also be omitted, thereby improving the production and processing efficiency of the magnetic poles.

[0020] At the same time, the pole tooling can be used to cooperate with the pole body, thereby improving the processing and assembly efficiency of the pole body, thereby reducing the overall production cost of the pole body. The pole tooling can be used as an accompanying tooling, which covers most of the processing procedures of the pole body, such as opening connection holes, setting key strips and end plates, connecting key strips and end plates, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the main structure of the magnetic pole body of the utility model;

[0022] Figure 2 It is a left-side structural schematic diagram of the magnetic pole body of the utility model;

[0023] Figure 3 This is one of the overall structural schematic diagrams of the magnetic pole device of the utility model;

[0024] Figure 4 This is the second schematic diagram of the overall structure of the magnetic pole device of the utility model.

[0025] [Description of Reference Numerals]

[0026] 1: Magnetic disk;

[0027] 2: Key bar;

[0028] 3: End plate;

[0029] A: connection hole;

[0030] B: internal thread;

[0031] C: Mounting slot;

[0032] D: First yielding area;

[0033] E: Second yielding area;

[0034] F: Third yielding area;

[0035] 4: Fetal body;

[0036] 5: Pressing plate;

[0037] 6: Briquetting;

[0038] 7: sliding drive mechanism; 71: lead screw; 72: mounting plate; 73: handle. DETAILED DESCRIPTION

[0039] In order to better explain the present invention and facilitate understanding, the following Figure 1-4 , the utility model is described in detail through specific implementation methods. Among them, the directional nouns such as "upper" and "lower" mentioned in this article are Figure 1 The orientation is used as a reference.

[0040] Embodiment 1:

[0041] Reference Figure 1-Figure 4 An embodiment of the utility model provides a magnetic pole device, including a magnetic pole body, the magnetic pole body including magnetic sheets 1, key strips 2 and end plates 3, a plurality of magnetic sheets 1 are stacked and arranged, the end plates 3 are located on both sides of the stacked magnetic sheets 1, the key strips 2 penetrate the stacked magnetic sheets 1 and the end plates 3, and the key strips 2 do not protrude beyond the end plates 3, and the end plates 3 are connected to the key strips 2 to clamp the stacked magnetic sheets 1.

[0042] In this embodiment, the stacked magnetic sheets 1 are compressed by two end plates 3, and the end plates 3 are connected to the key strips 2 that penetrate the magnetic sheets 1. The key strips 2 themselves have almost negligible influence on the performance of the magnetic sheets 1, and the key strips 2 are also essential components of most magnetic poles. This is equivalent to adding end plates 3 to the magnetic poles in this patent, so that the stacked magnetic sheets 1 can be compressed. Compared with the prior art, the connecting screws can be omitted, thereby avoiding damage to the structure of the magnetic sheets 1 and improving the performance of the magnetic poles. The assembly of the screws and the pre-tightening process of the nuts at both ends of the screws can also be omitted, thereby improving the production and processing efficiency of the magnetic poles.

[0043] Specifically, the key bar 2 can be set to a rectangular shape to limit the freedom of rotation of the magnetic sheet 1 relative to the axis of the key bar 2 to avoid erroneous deflection of the magnetic poles.

[0044] In this embodiment, a plurality of connection holes A are further provided on one side of the stacked magnetic sheets 1, and the connection holes A penetrate the key bar 2, and the axis of the connection holes A is perpendicular to the axis of the key bar 2; the key bar 2 is provided with internal threads B at positions corresponding to the connection holes A to connect the magnetic pole body and the rotor. In this embodiment, the internal threads B on the key bar 2 are used to establish a connection relationship between the magnetic pole body and the rotor, for example, the connection between the magnetic pole body and the rotor can be achieved by bolts, and the connection holes A can make way for the bolts.

[0045] The internal thread B is used as the connecting thread of the bolt, and the connecting hole A is not threaded. Since the key bar 2 passes through all the magnetic sheets 1, all the magnetic sheets 1 can be connected to the rotor through the key bar 2, thereby ensuring the stability and reliability of the combination of the magnetic sheets 1 and the rotor. Specifically, the number of connecting holes A and internal threads B is determined according to the length of the magnetic pole body, and the connecting hole A is opened on the side wall of the small end of the magnetic pole body.

[0046] In this embodiment, the magnetic pole device also includes a magnetic pole tooling, which includes a carcass 4, a pressure plate 5 and a pressure block 6. An installation groove C is formed in the carcass 4, and the stacked magnetic sheets 1 can be detachably connected to the installation groove C. The pressure plate 5 and the pressure block 6 are respectively detachably connected to both sides of the carcass 4, and the pressure block 6 can extend into the installation groove C so that the pressure plate 5 and the pressure block 6 can press the stacked magnetic sheets 1.

[0047] In this embodiment, the pole tooling is used to cooperate with the pole body, thereby improving the processing and assembly efficiency of the pole body, thereby reducing the overall production cost of the pole body. The pole tooling can be used as an accompanying tooling, which covers most of the processing steps of the pole body, such as opening the connection hole A, setting the key bar 2 and the end plate 3, connecting the key bar 2 and the end plate 3, etc.

[0048] The mounting groove C on the carcass 4 serves as a positioning groove for the magnetic piece 1 to limit the position of the magnetic piece 1 and ensure that the magnetic pole body is always maintained on the carcass 4 in a predetermined posture.

[0049] The pressing block 6 and the pressing plate 5 are used to limit the positions of the two ends of the magnetic sheet 1. When the pressing block 6 and the pressing plate 5 press the magnetic sheet 1, the position of the magnetic sheet 1 is limited, and the positions of the end plates 3 at both ends of the magnetic sheet 1 are also limited. At the same time, the welding work of the key bar 2 and the end plate 3 can be carried out conveniently and quickly. Since the pressing block 6 and the pressing plate 5 can well complete the pre-tightening of the end plate 3 and the magnetic sheet 1, the welding work can be directly carried out on the magnetic pole tooling to ensure the tightness between adjacent magnetic sheets 1, thereby improving the overall performance of the magnetic pole body.

[0050] The key bar 2 is inserted into a prefabricated through hole on the magnetic sheet 1, such as a square hole pre-opened on the stacked magnetic sheets 1.

[0051] In this embodiment, the pressure plate 5 is a fixed plate arranged at one end of the tire body 4, and the pressure block 6 is a sliding part that can approach or move away from the magnetic sheet 1. By allowing the pressure block 6 to extend into the installation groove C, it can be ensured that the magnetic sheet 1 and the end plate 3 can be reliably pre-tightened, thereby improving the assembly efficiency of the magnetic pole body.

[0052] Specifically, the carcass 4 , the pressing block 6 and the pressing block 6 can all be made of metal, and the pressing plate 5 and the carcass 4 can be connected by screws.

[0053] In this embodiment, a first clearance area D is provided on the pressing block 6, and a second clearance area E is provided on the pressing plate 5 to allow operating space when the end plate 3 and the key bar 2 are connected; the end plate 3 and the key bar 2 are welded.

[0054] In this embodiment, the second clearance area E can be a clearance hole opened on the pressing plate 5, the pressing block 6 can be U-shaped, and the first clearance area D on the pressing block 6 can be the middle part of the pressing block 6. The clearance hole is not only used to make room for welding, but also used to insert the key bar 2 into the magnetic sheet 1.

[0055] Furthermore, the welding here can be preliminary welding, that is, the pre-connection of the end plate 3 and the key bar 2 is achieved by spot welding, and the secondary fastening welding is performed after the end plate 3, the key bar 2 and the magnetic sheet 1 are assembled as a whole. In other words, the first clearance area D and the second clearance area E can make room for some welding positions, thereby improving the flexibility of the use of the magnetic pole tooling. When the size of the magnetic sheet 1 changes, it is sufficient to ensure that part of the connection between the key bar 2 and the end plate 3 is made free.

[0056] Meanwhile, a third clearance area F is provided on the carcass 4 , and the position of the third clearance area F corresponds to the position of the connection hole A, so as to make room for operation when the connection hole A is provided. The third clearance area F can be a clearance groove or a clearance hole provided on the carcass 4 .

[0057] The mounting groove C is a trapezoid that matches the shape of the magnetic sheet 1 , and the mounting groove C is open on one side of the long side of the trapezoid. In this embodiment, the depth of the mounting groove C is less than the height of the magnetic sheet 1 so that the magnetic sheet 1 can extend out of the mounting groove C.

[0058] In this embodiment, by extending the magnetic sheet 1 out of the mounting slot C, after the magnetic sheet 1 is installed in the mounting slot C, the top of the magnetic sheet 1 can be loaded to ensure the tightness and reliability of the fit between the magnetic sheet 1 and the mounting slot C, thereby improving the positioning accuracy of the mounting slot C for the magnetic sheet 1. The magnetic sheet 1 is installed into the mounting slot C from the open side of the mounting slot C, thereby improving the loading efficiency of the magnetic sheet 1 and reducing the difficulty of loading.

[0059] The pole tooling also includes a sliding drive mechanism 7, which is connected to the carcass 4, and a pressure block 6 is connected to the driving end of the sliding drive mechanism 7, so that the pressure block 6 can be close to or away from the stacked magnetic sheets 1. The sliding drive mechanism 7 includes a lead screw 71 and a mounting plate 72, the mounting plate 72 is detachably connected to one side of the carcass 4, the lead screw 71 is threadedly connected to the mounting plate 72, and the axis of the lead screw 71 extends along the compression direction of the stacked magnetic sheets 1, and the pressure block 6 is rotatably connected to the end of the lead screw 71 close to the magnetic sheet 1 along the axis of the lead screw 71. The sliding drive mechanism 7 also includes a handle 73 connected to the end of the lead screw 71 away from the magnetic sheet 1.

[0060] In this embodiment, the pressing block 6 is driven by the sliding drive mechanism 7, the lead screw 71 is threadedly connected to the mounting plate 72, and the pressing block 6 is rotatably connected to the end of the lead screw 71, such as being sleeved on the end of the lead screw 71, that is, the threaded section on the lead screw 71 is threadedly matched with the mounting plate 72, and the optical axis section on the lead screw 71 is sleeved with the pressing block 6. In this way, by rotating the handle 73 forward or reversely, the pressing block 6 can be moved closer to or away from the magnetic sheet 1, thereby realizing the pre-tightening of the end plate 3 and the magnetic sheet 1, or releasing the pre-tightening of the end plate 3 and the magnetic sheet 1.

[0061] The sliding drive mechanism 7 can enable the pressing block 6 to manually pre-tighten the end plate 3 and the magnetic sheet 1, thereby improving the adjustment convenience of the pressing block 6 and further improving the production efficiency of the magnetic pole body.

[0062] In the description of the present utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0063] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the present utility model, unless otherwise clearly specified and limited, when a first feature is “on” or “below” a second feature, it may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, when a first feature is “above”, “above” or “above” a second feature, it may be that the first feature is directly above or obliquely above the second feature, or it may simply mean that the first feature is higher in level than the second feature. When a first feature is “below”, “below” or “below” a second feature, it may be that the first feature is directly below or obliquely below the second feature, or it may simply mean that the first feature is lower in level than the second feature.

[0065] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0066] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A magnetic pole device, characterized in that: The invention comprises a magnetic pole body, wherein the magnetic pole body comprises magnetic sheets (1), key strips (2) and end plates (3); a plurality of the magnetic sheets (1) are stacked and arranged, the end plates (3) are located on both sides of the stacked magnetic sheets (1), the key strips (2) penetrate the stacked magnetic sheets (1) and the end plates (3), and the key strips (2) do not protrude beyond the end plates (3); the end plates (3) are connected to the key strips (2) to clamp the stacked magnetic sheets (1).

2. The magnetic pole device according to claim 1, characterized in that: A plurality of connection holes (A) are also provided on one side of the stacked magnetic sheets (1), the connection holes (A) penetrate the key strip (2), and the axes of the connection holes (A) are perpendicular to the axes of the key strip (2); The key strip (2) is provided with an internal thread (B) at a position corresponding to the connection hole (A) so as to connect the magnetic pole body and the rotor.

3. The magnetic pole device according to claim 2, characterized in that: The magnetic pole device also includes a magnetic pole tooling, which includes a carcass (4), a pressure plate (5) and a pressure block (6). A mounting groove (C) is formed in the carcass (4), and the stacked magnetic sheets (1) can be detachably connected to the mounting groove (C). The pressure plate (5) and the pressure block (6) are respectively detachably connected to the two sides of the carcass (4), and the pressure block (6) can extend into the mounting groove (C) so that the pressure plate (5) and the pressure block (6) can press the stacked magnetic sheets (1).

4. The magnetic pole device according to claim 3, characterized in that: The pressing block (6) is provided with a first clearance area (D), and the pressing plate (5) is provided with a second clearance area (E) to allow operating space when the end plate (3) and the key bar (2) are connected; The end plate (3) and the key strip (2) are welded.

5. The magnetic pole device according to claim 4, characterized in that: The carcass (4) is provided with a third clearance area (F), and the position of the third clearance area (F) corresponds to the position of the connection hole (A) so as to make room for operation when opening the connection hole (A).

6. The magnetic pole device according to claim 5, characterized in that: The mounting groove (C) is a trapezoid that matches the shape of the magnetic sheet (1), and the mounting groove (C) is open on one side corresponding to the long side of the trapezoid; The depth of the mounting groove (C) is less than the height of the magnetic sheet (1), so that the magnetic sheet (1) can extend out of the mounting groove (C).

7. The magnetic pole device according to any one of claims 3 to 6, characterized in that: The magnetic pole tooling further comprises a sliding drive mechanism (7), wherein the sliding drive mechanism (7) is connected to the carcass (4), and the pressing block (6) is connected to the driving end of the sliding drive mechanism (7) so that the pressing block (6) can approach or move away from the stacked magnetic sheets (1).

8. The magnetic pole device according to claim 7, characterized in that: The sliding drive mechanism (7) comprises a lead screw (71) and a mounting plate (72), wherein the mounting plate (72) is detachably connected to one side of the carcass (4), the lead screw (71) is threadedly connected to the mounting plate (72), and the axis of the lead screw (71) extends along the clamping direction of the stacked magnetic sheets (1), and the pressure block (6) is rotatably connected to the end of the lead screw (71) close to the magnetic sheet (1) along the axis of the lead screw (71).

9. The magnetic pole device according to claim 8, characterized in that: The sliding drive mechanism (7) further comprises a handle (73) connected to an end of the lead screw (71) away from the magnetic sheet (1).

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